No, there is not way of doing it. The room list is meant to refresh all the time automatically so you can see the numbers in rooms rise and fall while you are on the screen without doing a thing...doesnt seem to be as reliable now that the rooms are hsoted privately however. I did actually sit outside and watch when I was waiting for balst once and he didnt show up as entering the room...so not sure if this feature still works or if something else needs to be enabled on the server end for it to work